Stickers in iMessage are a fun way to share images with your friends. Stickers can be slapped onto a message as a response to a message you've received or just for fun with no particular reason at all.
To create a sticker pack, open Xcode and create a new project. One of the available project templates is the Sticker Pack Application; select it and click Next. Give your sticker pack a name and click Next again to create your project:
In the generated project, you'll find two folders. One is named
Stickers.xcstickers and the other is named
Products. We're only interested in the sticker folder. If you open it, you'll ...